Calculation of the destruction of ice structures by the grid-characteristic method on structured grids.

Sea ice is a difficult object to study due to its heterogeneous structure and location near the melting point. This paper proposes a model of ice ridges as a heterogeneous structure with multiple water and air inclusions, free boundaries and free sliding contact boundaries. The dynamic growth of cracks in a given heterogeneous structure under intense dynamic influences is considered, which makes the considered boundary value problem nonlinear. The influence of explosion parameters (location of sources, frequency, number of periods) on the nature of the destruction of the ice ridges was investigated. The work also investigates the collision of an ice island with ice floes. For calculations, the grid-characteristic method is used on structured rectangular computational grids. [ABSTRACT FROM AUTHOR]